“When that twerpy little bat Minicula bites me and sucks my blood, I turn into a bat! My big, macho arms turn into puny little wings!! By the way, what’s my blood type? You sucked my blood, the least you can do is tell me that!! What a pest!!”

It can be triggered by coming in contact with a Minicula, causing Wario to become a bat, sporting a pair of pointy fangs, bat wings in place of his arms, an indigo skin tone, and red eyes. This reaction is similar in ability and appearance to the bat form of Vampire Wario, a key difference being that he cannot transform into an actual vampire, unlike in Wario Land 3. To turn into his normal self, he must go into a patch of light or fall into a pool of water (similar to Zombie Wario).